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are joined may be distinctly seen, for it forms a line in relief on both 

 sides of the leaves of the common Spruce, which is never the case 

 when such line is formed by the midrib, because it is then either on 

 the upper or under side. Some Spruces have two leaves grown 

 together, others four ; the sheaths at the base of the leaves are not 

 observable, but appear to have grown together in the footstalk." In 

 addition, Professor Link points out the following differences between 

 the leaves of the true Spruces (Picea) and Silver Firs (Abies). The 

 leaves of the Silver Firs, he says, " do not grow together, but are single, 

 and have the usual form of single leaves, the midrib being only visible 

 on the under side ; the upper one, having a furrow down the centre of 

 the leaf, is flat, divided at the point, and dark green, with two white 

 stripes on the under side, one on each side of the midrib, and arranged 

 in two or more rows along the shoots in a more or less lateral position." 

 P. acicularis, Maxim. F. japonica, Kegel. 



Habitat. — In the Japanese mountains. Some authors believe it 

 to be a form of P. Alcockiana (P. hicolor). Kegel regards it as an 

 alpine form. 



Hardy. 



P. ajanensis, Fischer, ex Lindl. and Gord. Journ. Hort. Soc. 

 V. 212 ; Carr. Tr. Gen. Conif. 259, 12 ; Fior. Ochot. 87 ; Masters 

 in Linn. Journ. xviii. 508 ; Hook. Bot. Mag. t. 6743 ; Yataba, Catal. 

 of PI. Bot. Gard. 208 ; Engl, and Prantl, Natilrl. Pflf. ii. 1, s. 58 ; 

 Mayr, Monogr. Abiet. Jap. 53, 4, f. 10. Abies ajanensis, Lindl. and 

 Gord. Journ. Hort. Soc. v, 212 ; Maxim. Prim. Fl. Amur. 261, 686 ; 

 Veitch, Man. Conif. 66. A. jezoensis, Sieb. and Zucc. Fl. Jap. 110 ; 

 Lindl. and Gord. in Journ. Hort. Soc. I.e. ; Knight, Syn. Conif. 37 ; 

 Carr. Tr. Gen. Conif. ed. 1, 255 ; Gord. Pinet. ed. 1, 17 ; Murr, Pines 

 and Firs of Japan, 72 ; Henk. and Hochst. Syn. der Nadelh. 137, 199 ; 

 Miquel, Prolus. Fl. Jap. 330 ; Hoopes, Evergreens, 180, 12 ; Sieb. 

 and Zucc. Rein. Jap. ii. 280, s. 25. Picea jezoensis, Carr. Tr. Gen. 

 Conif. ed. 1, 255, 9. Abies microsperma, Lindl. Gard. Chron. Jan. 12, 

 1861, 22 ; Henk. and Hochst. 186. A. microcarpa, Lindl. Miquel, 

 Prolus. Fl. Jap. 389. Abies ajanensis var. microsperma, Yeitch, Man. 

 Conif. 66. Picea ajanensis var. japonica, Maxim, ii. Reise. P. 

 japonica, Maxim. Index. Seminum Hort. Petropolitan. 1865, 33 ; 

 Pari, in DC. Prodr. xvi. 2, 431. Abies Mendesii, Loud. Franch. 

 and Savat. Enum. 467 ; Cat. of PI. Koishikawa Bot. Gard. 92. 

 A. sitchensis, Lamb. Koch, Dendr. ii. 247, 28. A. Schrenkiana, 

 Lindl. and Gord. Pinet. ii. 18. Piaus Menziesii, Dougl. Pari, in 

 DC. Prodr. 418, 87. Picea obovata var. Schrenkiana, or ajanensis, 

 Engl, and Prantl, Natllrl. Pflf. 79. 



Habitat. — It is found in Eastern Siberia. Dr. Mayr says that it 

 is at home in Japan on all the mountains of Eso. It only reaches tiie 

 coast in the west of the island, and on swampy ground behind the 

 sand-dunes, where it extends almost to the sea, close to which grows a 



